Cannon and fellow PI Barnaby Jones end up working the same case but for different clients when a whistleblower is raped and killed.

There are two versions of this story available, in one, Budd McKenna doesn't die and this episode is wrapped as a single episode of "Cannon". In other, fuller version, Budd McKenna is killed and part 2 of the story continues on "Barnaby Jones" (S04E01).

Cannon looks into an old case from his days on the police force, trying to determine if the man he believed was guilty is actually innocent.